Ninja Forms is using $.browser which is a deprecated jQuery function since version 1.3 and was completely removed from jQuery as of the recently released 1.9 version.
Please see http://api.jquery.com/jQuery.browser/.
Could you point me in the direction of the line and file that you noticed that in? I've found it in our version of jquery.datepicker, but I'm phasing that out of the plugin entirely in the next version because we have changed our WordPress version requirement.
After trying the plugin I decided to go another way and I didn't note the line nrs, but wouldn't help much anyway, as the included JS files are minified IIRC. I was trying out a simple contact form if that helps (name/email/message fields).
I suggest doing a search for $.browser in all your plugin's .js files.
Thanks. I did do a search and that is the only file I came up with. I just wanted to make sure I wasn't missing something.
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